Dec 19 22:26:54.809 INFO checking PaulGrandperrin/playground against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 22:26:54.810 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/PaulGrandperrin/playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:26:55.057 INFO [stdout] 305c66bd1063a91ae2d860caa5c49abe211e30364987d96d650e6ae6526e3531
Dec 19 22:26:55.061 INFO running `"docker" "start" "-a" "305c66bd1063a91ae2d860caa5c49abe211e30364987d96d650e6ae6526e3531"`
Dec 19 22:26:55.892 INFO [stderr]    Compiling num-bigint v0.2.2
Dec 19 22:26:55.892 INFO [stderr]     Checking bincode v1.0.1
Dec 19 22:26:55.892 INFO [stderr]     Checking failure v0.1.3
Dec 19 22:26:59.184 INFO [stderr]     Checking num-rational v0.2.1
Dec 19 22:26:59.874 INFO [stderr]     Checking num v0.2.0
Dec 19 22:27:00.108 INFO [stderr]     Checking playground v0.1.0 (/opt/crater/workdir)
Dec 19 22:27:00.873 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 22:27:00.873 INFO [stderr]  --> src/algorithm.rs:1:5
Dec 19 22:27:00.873 INFO [stderr]   |
Dec 19 22:27:00.873 INFO [stderr] 1 | use std::collections::BTreeMap;
Dec 19 22:27:00.873 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.873 INFO [stderr]   |
Dec 19 22:27:00.873 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:27:00.874 INFO [stderr] 
Dec 19 22:27:00.874 INFO [stderr] warning: unused import: `itertools::Itertools`
Dec 19 22:27:00.874 INFO [stderr]  --> src/algorithm.rs:4:5
Dec 19 22:27:00.874 INFO [stderr]   |
Dec 19 22:27:00.874 INFO [stderr] 4 | use itertools::Itertools;
Dec 19 22:27:00.874 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.874 INFO [stderr] 
Dec 19 22:27:00.874 INFO [stderr] warning: unused import: `crate::common::ConstObjType`
Dec 19 22:27:00.874 INFO [stderr]  --> src/context.rs:2:5
Dec 19 22:27:00.874 INFO [stderr]   |
Dec 19 22:27:00.874 INFO [stderr] 2 | use crate::common::ConstObjType;
Dec 19 22:27:00.874 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.874 INFO [stderr] 
Dec 19 22:27:00.874 INFO [stderr] warning: unused import: `crate::non_volatile::object::object_type::ObjectType`
Dec 19 22:27:00.874 INFO [stderr]  --> src/context.rs:5:5
Dec 19 22:27:00.874 INFO [stderr]   |
Dec 19 22:27:00.874 INFO [stderr] 5 | use crate::non_volatile::object::object_type::ObjectType;
Dec 19 22:27:00.874 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.874 INFO [stderr] 
Dec 19 22:27:00.874 INFO [stderr] warning: unused imports: `LeafType`, `NodeEntry`, `Node`
Dec 19 22:27:00.874 INFO [stderr]  --> src/context.rs:6:51
Dec 19 22:27:00.874 INFO [stderr]   |
Dec 19 22:27:00.874 INFO [stderr] 6 | use crate::non_volatile::object::tree::{LeafNode, LeafType, Node, NodeEntry};
Dec 19 22:27:00.903 INFO [stderr]   |                                                   ^^^^^^^^  ^^^^  ^^^^^^^^^
Dec 19 22:27:00.903 INFO [stderr] 
Dec 19 22:27:00.903 INFO [stderr] warning: unused import: `std::ops::Deref`
Dec 19 22:27:00.903 INFO [stderr]  --> src/context.rs:9:5
Dec 19 22:27:00.903 INFO [stderr]   |
Dec 19 22:27:00.903 INFO [stderr] 9 | use std::ops::Deref;
Dec 19 22:27:00.903 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.903 INFO [stderr] 
Dec 19 22:27:00.903 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 19 22:27:00.903 INFO [stderr]   --> src/context.rs:10:5
Dec 19 22:27:00.903 INFO [stderr]    |
Dec 19 22:27:00.903 INFO [stderr] 10 | use std::rc::Rc;
Dec 19 22:27:00.903 INFO [stderr]    |     ^^^^^^^^^^^
Dec 19 22:27:00.903 INFO [stderr] 
Dec 19 22:27:00.903 INFO [stderr] warning: unused import: `std::borrow::Borrow`
Dec 19 22:27:00.903 INFO [stderr]  --> src/non_volatile/object/any_rc_object.rs:6:5
Dec 19 22:27:00.903 INFO [stderr]   |
Dec 19 22:27:00.903 INFO [stderr] 6 | use std::borrow::Borrow;
Dec 19 22:27:00.903 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.903 INFO [stderr] 
Dec 19 22:27:00.903 INFO [stderr] warning: unused import: `TryInto`
Dec 19 22:27:00.903 INFO [stderr]  --> src/non_volatile/object/any_rc_object.rs:7:29
Dec 19 22:27:00.903 INFO [stderr]   |
Dec 19 22:27:00.903 INFO [stderr] 7 | use std::convert::{TryFrom, TryInto};
Dec 19 22:27:00.903 INFO [stderr]   |                             ^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `BufMut`, `Buf`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/object_pointer.rs:6:13
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 6 | use bytes::{Buf, BufMut};
Dec 19 22:27:00.904 INFO [stderr]   |             ^^^  ^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::io::Cursor`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/object_pointer.rs:7:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 7 | use std::io::Cursor;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, `self`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/internal_node.rs:3:17
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 3 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
Dec 19 22:27:00.904 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `SerializeStruct`, `Serialize`, `Serializer`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/internal_node.rs:4:18
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 4 | use serde::ser::{Serialize, SerializeStruct, Serializer};
Dec 19 22:27:00.904 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `super::super::object_type::ObjectType`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:1:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 1 | use super::super::object_type::ObjectType;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:4:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 4 | use std::fmt;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::mem`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:5:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 5 | use std::mem;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, `self`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:7:17
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 7 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
Dec 19 22:27:00.904 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `SerializeStruct`, `Serialize`, `Serializer`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:8:18
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 8 | use serde::ser::{Serialize, SerializeStruct, Serializer};
Dec 19 22:27:00.904 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused imports: `BufMut`, `Buf`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:4:13
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 4 | use bytes::{Buf, BufMut};
Dec 19 22:27:00.904 INFO [stderr]   |             ^^^  ^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `failure::format_err`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:5:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 5 | use failure::format_err;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::io::Cursor`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:7:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 7 | use std::io::Cursor;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::mem`
Dec 19 22:27:00.904 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:8:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 8 | use std::mem;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr] 
Dec 19 22:27:00.904 INFO [stderr] warning: unused import: `std::collections::BTreeMap`
Dec 19 22:27:00.904 INFO [stderr]  --> src/algorithm.rs:1:5
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.904 INFO [stderr] 1 | use std::collections::BTreeMap;
Dec 19 22:27:00.904 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.904 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `itertools::Itertools`
Dec 19 22:27:00.905 INFO [stderr]  --> src/algorithm.rs:4:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 4 | use itertools::Itertools;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `crate::common::ConstObjType`
Dec 19 22:27:00.905 INFO [stderr]  --> src/context.rs:2:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 2 | use crate::common::ConstObjType;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `crate::non_volatile::object::object_type::ObjectType`
Dec 19 22:27:00.905 INFO [stderr]  --> src/context.rs:5:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 5 | use crate::non_volatile::object::object_type::ObjectType;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused imports: `LeafType`, `NodeEntry`, `Node`
Dec 19 22:27:00.905 INFO [stderr]  --> src/context.rs:6:51
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 6 | use crate::non_volatile::object::tree::{LeafNode, LeafType, Node, NodeEntry};
Dec 19 22:27:00.905 INFO [stderr]   |                                                   ^^^^^^^^  ^^^^  ^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `std::ops::Deref`
Dec 19 22:27:00.905 INFO [stderr]  --> src/context.rs:9:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 9 | use std::ops::Deref;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 19 22:27:00.905 INFO [stderr]   --> src/context.rs:10:5
Dec 19 22:27:00.905 INFO [stderr]    |
Dec 19 22:27:00.905 INFO [stderr] 10 | use std::rc::Rc;
Dec 19 22:27:00.905 INFO [stderr]    |     ^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `std::borrow::Borrow`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/any_rc_object.rs:6:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 6 | use std::borrow::Borrow;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `TryInto`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/any_rc_object.rs:7:29
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 7 | use std::convert::{TryFrom, TryInto};
Dec 19 22:27:00.905 INFO [stderr]   |                             ^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused imports: `BufMut`, `Buf`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/object_pointer.rs:6:13
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 6 | use bytes::{Buf, BufMut};
Dec 19 22:27:00.905 INFO [stderr]   |             ^^^  ^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `std::io::Cursor`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/object_pointer.rs:7:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 7 | use std::io::Cursor;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, `self`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/tree/internal_node.rs:3:17
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 3 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
Dec 19 22:27:00.905 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused imports: `SerializeStruct`, `Serialize`, `Serializer`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/tree/internal_node.rs:4:18
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 4 | use serde::ser::{Serialize, SerializeStruct, Serializer};
Dec 19 22:27:00.905 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `super::super::object_type::ObjectType`
Dec 19 22:27:00.905 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:1:5
Dec 19 22:27:00.905 INFO [stderr]   |
Dec 19 22:27:00.905 INFO [stderr] 1 | use super::super::object_type::ObjectType;
Dec 19 22:27:00.905 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.905 INFO [stderr] 
Dec 19 22:27:00.905 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:4:5
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 4 | use std::fmt;
Dec 19 22:27:00.906 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused import: `std::mem`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:5:5
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 5 | use std::mem;
Dec 19 22:27:00.906 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, `self`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:7:17
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 7 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor};
Dec 19 22:27:00.906 INFO [stderr]   |                 ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused imports: `SerializeStruct`, `Serialize`, `Serializer`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/tree/leaf_node.rs:8:18
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 8 | use serde::ser::{Serialize, SerializeStruct, Serializer};
Dec 19 22:27:00.906 INFO [stderr]   |                  ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused imports: `BufMut`, `Buf`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:4:13
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 4 | use bytes::{Buf, BufMut};
Dec 19 22:27:00.906 INFO [stderr]   |             ^^^  ^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused import: `failure::format_err`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:5:5
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 5 | use failure::format_err;
Dec 19 22:27:00.906 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused import: `std::io::Cursor`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:7:5
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 7 | use std::io::Cursor;
Dec 19 22:27:00.906 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:00.906 INFO [stderr] warning: unused import: `std::mem`
Dec 19 22:27:00.906 INFO [stderr]  --> src/non_volatile/object/uberblock.rs:8:5
Dec 19 22:27:00.906 INFO [stderr]   |
Dec 19 22:27:00.906 INFO [stderr] 8 | use std::mem;
Dec 19 22:27:00.906 INFO [stderr]   |     ^^^^^^^^
Dec 19 22:27:00.906 INFO [stderr] 
Dec 19 22:27:01.317 INFO [stderr] warning: unused import: `crate::common::ConstObjType`
Dec 19 22:27:01.317 INFO [stderr]  --> src/non_volatile/manager.rs:7:5
Dec 19 22:27:01.317 INFO [stderr]   |
Dec 19 22:27:01.317 INFO [stderr] 7 | use crate::common::ConstObjType;
Dec 19 22:27:01.317 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.317 INFO [stderr] 
Dec 19 22:27:01.345 INFO [stderr] warning: unused import: `crate::common::ConstObjType`
Dec 19 22:27:01.345 INFO [stderr]  --> src/non_volatile/manager.rs:7:5
Dec 19 22:27:01.345 INFO [stderr]   |
Dec 19 22:27:01.345 INFO [stderr] 7 | use crate::common::ConstObjType;
Dec 19 22:27:01.345 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.345 INFO [stderr] 
Dec 19 22:27:01.596 INFO [stderr] warning: the feature `dbg_macro` has been stable since 1.32.0 and no longer requires an attribute to enable
Dec 19 22:27:01.596 INFO [stderr]  --> src/main.rs:5:5
Dec 19 22:27:01.596 INFO [stderr]   |
Dec 19 22:27:01.596 INFO [stderr] 5 |     dbg_macro,
Dec 19 22:27:01.596 INFO [stderr]   |     ^^^^^^^^^
Dec 19 22:27:01.596 INFO [stderr]   |
Dec 19 22:27:01.596 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 22:27:01.596 INFO [stderr] 
Dec 19 22:27:01.596 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.596 INFO [stderr]   --> src/non_volatile/manager.rs:50:13
Dec 19 22:27:01.596 INFO [stderr]    |
Dec 19 22:27:01.596 INFO [stderr] 50 |             nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
Dec 19 22:27:01.596 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.596 INFO [stderr]    |
Dec 19 22:27:01.596 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:27:01.596 INFO [stderr] 
Dec 19 22:27:01.597 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.597 INFO [stderr]    --> src/non_volatile/manager.rs:104:9
Dec 19 22:27:01.597 INFO [stderr]     |
Dec 19 22:27:01.597 INFO [stderr] 104 |         self.nv_blk_dev.write(ub_offset, &ub_raw);
Dec 19 22:27:01.597 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.597 INFO [stderr] 
Dec 19 22:27:01.597 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.597 INFO [stderr]    --> src/non_volatile/manager.rs:155:9
Dec 19 22:27:01.597 INFO [stderr]     |
Dec 19 22:27:01.597 INFO [stderr] 155 |         nv_blk_dev.write(offset, &obj_raw);
Dec 19 22:27:01.597 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.597 INFO [stderr] 
Dec 19 22:27:01.603 INFO [stderr] warning: the feature `dbg_macro` has been stable since 1.32.0 and no longer requires an attribute to enable
Dec 19 22:27:01.603 INFO [stderr]  --> src/main.rs:5:5
Dec 19 22:27:01.603 INFO [stderr]   |
Dec 19 22:27:01.603 INFO [stderr] 5 |     dbg_macro,
Dec 19 22:27:01.603 INFO [stderr]   |     ^^^^^^^^^
Dec 19 22:27:01.603 INFO [stderr]   |
Dec 19 22:27:01.603 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 22:27:01.603 INFO [stderr] 
Dec 19 22:27:01.603 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.603 INFO [stderr]   --> src/non_volatile/manager.rs:50:13
Dec 19 22:27:01.603 INFO [stderr]    |
Dec 19 22:27:01.603 INFO [stderr] 50 |             nv_blk_dev.write(i * Uberblock::RAW_SIZE as u64, &ub_raw);
Dec 19 22:27:01.603 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.603 INFO [stderr]    |
Dec 19 22:27:01.603 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 22:27:01.603 INFO [stderr] 
Dec 19 22:27:01.603 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.603 INFO [stderr]    --> src/non_volatile/manager.rs:104:9
Dec 19 22:27:01.603 INFO [stderr]     |
Dec 19 22:27:01.604 INFO [stderr] 104 |         self.nv_blk_dev.write(ub_offset, &ub_raw);
Dec 19 22:27:01.604 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.604 INFO [stderr] 
Dec 19 22:27:01.604 INFO [stderr] warning: unused return value of `non_volatile::block_device::file_backend::FileBackend::write` that must be used
Dec 19 22:27:01.604 INFO [stderr]    --> src/non_volatile/manager.rs:155:9
Dec 19 22:27:01.604 INFO [stderr]     |
Dec 19 22:27:01.604 INFO [stderr] 155 |         nv_blk_dev.write(offset, &obj_raw);
Dec 19 22:27:01.604 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:27:01.604 INFO [stderr] 
Dec 19 22:27:01.668 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.90s
Dec 19 22:27:01.987 INFO running `"docker" "inspect" "305c66bd1063a91ae2d860caa5c49abe211e30364987d96d650e6ae6526e3531"`
Dec 19 22:27:02.166 INFO running `"docker" "rm" "-f" "305c66bd1063a91ae2d860caa5c49abe211e30364987d96d650e6ae6526e3531"`
Dec 19 22:27:02.582 INFO [stdout] 305c66bd1063a91ae2d860caa5c49abe211e30364987d96d650e6ae6526e3531